Reading an Analog Input

/*
* AnalogInput.ino * * Created: 5/5/2015 1:30:42 PM * Author: Gideon */

int led=12; int sensor=A2;

int sensorvalue=0;

void setup() {

/* add setup code here, setup code runs once when the processor starts */ pinMode(led,OUTPUT); pinMode(sensor,INPUT);

}

void loop() {

/* add main program code here, this code starts again each time it ends */ sensorvalue=analogRead(sensor); digitalWrite(led,HIGH); delay(sensorvalue); digitalWrite(led,LOW); delay(sensorvalue);

}

Step 1:

This project illustrates how one can read analog values from a variable resistor to control the rate of blinking of an led.